Sat nav

Car navigation systems are electronic devices which automatically locate the vehicle and lay a convenient route. Moreover, the software informing the driver about traffic jams, road repair works and car accidents is often available for them.

Operation principle

The device receives radio signals from space satellites. Using the built-in processor it defines how much time passed between signal transmission and reception. This value is multiplied by the speed at which radio-waves are propagating. This allows the device to define the distance to each signal source. Thus, basing on location of a few satellites, the device defines its coordinates. The information is supplied to a user in a convenient form: the display shows the map and the user’s location on it.

What are the types of car navigation systems

These devices differ from one another in the following characteristics:

• Quantity of satellite tracking channels. The higher it is, the more precise data is provided by the device. Their quantity can be various, for instance – 22, 48, 66.
• Processor frequency. It defines the accessory operation speed. Catalogues include models with the following processor frequencies: 600, 800, 1000 MHz.
• Operation system. Available are Windows CE, Android, as well as software packages developed by the device manufacturer.
• Storage capacity. Models, for which this value is higher, are capable of storing more maps.
• RAM capacity. It defines the quantity of tasks, which the car navigation system can perform simultaneously. It can be 64, 128, 256 Mb.
• Battery runtime. It is a period, for which battery charge is sufficient. It can reach a few hours, and after this charging of the device will be necessary.
• Display size. A compact screen will take minimum place, but it is easier to read the map using a large one.

Making purchase online, also pay attention to availability of additional functions. For example, a built-in video recorder or rear view camera will be a pleasant bonus.

Tips on car navigation systems use

1. Secure the accessory reliably. For this purpose, as a rule, special holders are supplied with the device.
2. Don’t install the device where the airbags are mounted. Fix it on the windshield or on the dashboard. Make sure that the device doesn’t impede your control of the road situation.
3. Make sure that the tilting angle of the car navigation system display allows you to easily follow the route.
4. Try to arrange the route before starting off.
5. Use a protective film for the screen.
6. If possible, carry the device in a special case.
7. If foreign objects or fluid got into the accessory – turn the power off and contact a specialist for repair.

AUTODOC: convenient online purchase

Buying car navigation systems at a moderate price is an absolutely achievable purpose. Simply study the assortment of our online shop. Don’t lose your chance to inexpensively purchase a reliable and functional device!